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Economic valuation of a seed dispersal service in the Stockholm National Urban Park, Sweden
Department of Economics, Stockholm University, Stockholm, Sweden.
Beijer International Institute of Ecological Economics, Royal Swedish Academy of Sciences, Stockholm, Sweden.ORCID iD: 0000-0001-7644-7448
Beijer International Institute of Ecological Economics, Royal Swedish Academy of Sciences, Stockholm, Sweden.
2006 (English)In: Ecological Economics, ISSN 0921-8009, E-ISSN 1873-6106, Vol. 59, no 3, p. 364-374Article in journal (Refereed) Published
Abstract [en]

Most economic valuation studies of species derive from stated preferences methods. These methods fail to take into account biodiversity values that the general public is not (made) informed about or has no experience with. Hence, production function (PF) and replacement cost (RC) approaches to valuation may be preferable in situations where species perform key life support functions in ecosystems, such as seed dispersal, pollination, or pest regulation. We conduct an RC analysis of the seed dispersal service performed by the Eurasian jay (Garrulus glandarius) in the Stockholm National Urban Park, Sweden. The park holds one of the largest populations of giant oaks in Europe, and the oak (Quercus robur and Quercus petrea) represents a keystone species in the hemiboreal forests. The primary objective was to estimate the number of seed-dispersed oak trees that resulted from jays and to determine the costs of replacing this service though human means. Results show that depending upon seeding or planting technique chosen, the RC per pair of jays in the park is SEK 35,000 (USD 4900) and SEK 160,000 (USD 22,500), respectively. Based on the park's aggregated oak forest-area, average RC for natural oak forest regeneration by jays is SEK 15,000 (USD 2100) to SEK 67,000 (USD 9400) per hectare, respectively. These estimates help motivating investments in management strategies that secure critical breeding and foraging habitats of jays, including coniferous forests and jay movement corridors. The analysis also illustrates the need for detailed ecological-economic knowledge in a PF or RC analysis. The continuous temporal and spatial oak dispersal service provided by jays holds several benefits compared to a man-made replacement of this service. PF and RC approaches are particularly motivated in cases of known functional ecological relationships, and critically important in estimating management measures where mobile link organisms and keystone species form key mutual relationships that generate high biodiversity benefits. In relation to obtained results, we discuss insights for conducting valuation studies on particular species.

Place, publisher, year, edition, pages
2006. Vol. 59, no 3, p. 364-374
Keywords [en]
Ecosystem services, Eurasian jay, Oak, Replacement cost valuation, Seed dispersal, boreal forest, coniferous forest, ecological economics, keystone species, valuation, Eurasia, Europe, Northern Europe, Scandinavia, Stockholm [Stockholm (CNT)], Stockholm [Sweden], Stockholm National Urban Park, Sweden, Corvidae, Garrulus glandarius, Petrea, Quercus, Quercus robur
National Category
Ecology Economics and Business
Identifiers
URN: urn:nbn:se:hig:diva-28162DOI: 10.1016/j.ecolecon.2005.11.007ISI: 000241226700015Scopus ID: 2-s2.0-33748109729OAI: oai:DiVA.org:hig-28162DiVA, id: diva2:1254755
Available from: 2018-10-10 Created: 2018-10-10 Last updated: 2018-11-26Bibliographically approved

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Colding, Johan

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